%0 Generic %1 karadimitriou2012inclusion %A Karadimitriou, N. %A Joekar-Niasar, V. %A Hassanizadeh, S. M. %A Kleingeld, P. J. %D 2012 %K mib mib_ls2 %T On the inclusion of interfacial area as a separate variable in quasi-static, two-phase, flow studies %X Micro-models have been proven to be a valuable tool in the field of porous media by allowing the observation of flow and transport on the micro-meter scale. Studies have included chemical, biological, and physical applications. They have helped to increase our insight of flow and transport phenomena on both micro- and macro-scales. A micro-model is an artificial representation of a porous medium, made of a transparent material. This fluidic device contains a flow-network with micro-scale features, inlet and outlet areas for the introduction and removal of the phases. It usually has an overall size of up to a few centimeters. Poly-Di-Methyl-Siloxane (PDMS) is a viscoelastic, silicon-based organic polymer. It is optically transparent, inert, non-toxic, and non-flammable. Given its mechanical and chemical properties, PDMS is a material suitable for manufacturing micro-models that can be used to study two-phase flow. Using such micro-models, we established that the inclusion of fluid-fluid interfacial area lifts the ambiguity of the hysteretic relationship between capillary pressure and saturation in porous media. With this work, we provided experimental evidence to support the theories that predict that for a complete description of two- or multi-phase flow, interfacial area should be included as one of the state variables, in addition to pressure and saturation.

@conference{karadimitriou2012inclusion, abstract = {Micro-models have been proven to be a valuable tool in the field of porous media by allowing the observation of flow and transport on the micro-meter scale. Studies have included chemical, biological, and physical applications. They have helped to increase our insight of flow and transport phenomena on both micro- and macro-scales. A micro-model is an artificial representation of a porous medium, made of a transparent material. This fluidic device contains a flow-network with micro-scale features, inlet and outlet areas for the introduction and removal of the phases. It usually has an overall size of up to a few centimeters. Poly-Di-Methyl-Siloxane (PDMS) is a viscoelastic, silicon-based organic polymer. It is optically transparent, inert, non-toxic, and non-flammable. Given its mechanical and chemical properties, PDMS is a material suitable for manufacturing micro-models that can be used to study two-phase flow. Using such micro-models, we established that the inclusion of fluid-fluid interfacial area lifts the ambiguity of the hysteretic relationship between capillary pressure and saturation in porous media. With this work, we provided experimental evidence to support the theories that predict that for a complete description of two- or multi-phase flow, interfacial area should be included as one of the state variables, in addition to pressure and saturation. }, added-at = {2020-01-15T17:38:14.000+0100}, author = {Karadimitriou, N. and Joekar-Niasar, V. and Hassanizadeh, S. M. and Kleingeld, P. J.}, biburl = {https://puma.ub.uni-stuttgart.de/bibtex/25daef6440ef9a2237edfac5eca7428b0/nkaradimitriou}, interhash = {729571497aaaf830cd6c2b56e76f4c09}, intrahash = {5daef6440ef9a2237edfac5eca7428b0}, keywords = {mib mib_ls2}, organization = {American Geophysical Union, Fall Meeting 2012}, timestamp = {2020-01-15T16:38:14.000+0100}, title = {On the inclusion of interfacial area as a separate variable in quasi-static, two-phase, flow studies }, year = 2012 }